The transcription factors Aft1p and Aft2p from Saccharomyces cerevisiae regulate the expression of genes that are involved in iron homeostasis. In vitro studies have shown that both transcription factors bind to an iron-responsive element (FeRE) that is present in the upstream region of genes in the iron regulon. We have used DNA microarrays to distinguish the genes that are activated by Aft1p and Aft2p and to establish for the first time that each factor gives rise to a unique transcriptional profile due to the differential expression of individual iron-regulated genes. We also show that both Aft1p and Aft2p mediate the in vivo expression of FET3 and FIT3 through a consensus FeRE. In addition, both proteins regulate MRS4 via a variant FeRE with Aft2p being the stronger activator from this particular element. Like other paralogous pairs of transcription factors within S. cerevisiae, Aft1p and Aft2p are able to interact with the same promoter elements while maintaining specificity of gene activation.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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